<div class="main-right-header">
    <button class="one"><span class="glyphicon glyphicon-chevron-left"></span></button>
    <button class="two"><span class="glyphicon glyphicon-chevron-right"></span></button>
    <ul>
        <li><em>tab1</em><span>首页</span></li>
    </ul>
</div>